Golang File Upload

This is a creation in Article, where the information may have evolved or changed. Recently write a file upload function, in view of their own experience of the go language is not enough, so the writing may be very general, but also please give us a lot of advice <br/> talk, directly on the code "" "Package Mainimport (" FMT "" html/template "IO" "Sync" "Log" "Net/http" "OS" "Time") type Buffer struct {bit []byteblen int}var bufpool *sync. Poolfunc INITBT () {Bufpool = &sync. Pool{}bufpool. New = func () interface{} {return Buffer{bit:make ([]byte, 64*1024), Blen:0,}}}func Copy (dst1 io. Writer, src io. Reader, FD *os. File) (err error) {ta: = time. Now (). Unixnano () var cache chan *buffer = make (chan *buffer, 16*1024) var tb int64 = 0go func (fd1 *os. File) {for {select {case BUF: = <-cache:if BUF = = Nil {goto END}NW1, EW: = Dst1. Write ((*buf). Bit[0: (*BUF). Blen]) if ew! = Nil {err: = ewfmt. Println ("-----------", err) goto end}if (*BUF). Blen! = NW1 {err: = io. ERRSHORTWRITEFMT.PRINTLN (Err) goto End}bufpool. Put ((*BUF))}}end:t2: = time. Now (). Unixnano () fmt. Println ("Eg:", T2-ta) fd1. Close ()} (FD) for {buffer: = Bufpool. Get (). (Buffer) nr, er: = src. Read (buffer.bit) if er! = nil {if er = = io. EOF {Close (cache) break}err = Er}buffer.blen = Nrcache <-&AMP;BUFFER}TB = time. Now (). Unixnano () fmt. Println ("read:", Tb-ta) return Err}func upload (w http. Responsewriter, R *http. Request) {r.parseform () if R.method = = "GET" {t, err: = template. Parsefiles ("UPLOAD.GPTL") Checkerr (Err) T.execute (W, Nil)} else {file, handle, err: = R.formfile ("file") Checkerr (Err) F, ERR: = OS. OpenFile ("test/" +handle. Filename, OS. O_wronly|os. O_create, 0666) T1: = time. Now (). Unixnano () Copy (f, file, F) checkerr (ERR) defer file. Close () T2: = time. Now (). Unixnano () fmt. Printf ("Sum:%v\n", T2-t1) fmt. fprintf (W, "Upload over")}}func Checkerr (err error) {if err! = Nil {err. Error ()}}func main () {INITBT () http. Handlefunc ("/upload", upload) fmt. Println ("open") Err: = http. Listenandserve (": 8888", nil) if err! = Nil {log. Fatal ("Listenandserve:", Err)}} "The file crosses, mainly using a new gorotine to perform the write operation of the file, and then pass through Chan to carry the pointer containing the file data,<br/> Self-feeling upload performance improved, also ask the great God to give good advice 374 reads  ∙  1 likes